These quality markers contain an acrylic and pigment-based paint that comes in 3 finishes (matte/opaque, precious/metallic & fluorescent). Pump mechanism allows more or less paint to flow to the tip which can be managed easily when applied to the surface to be painted. Available in 4 nib sizes - 0.7 mm extra fine tip, 1.2 mm bullet tip, 4 mm bullet tip & 4 mm chisel tip. Each pen features a replacement tip stored cleverly in the lid, for a quick & easy change if the nib becomes damaged or unusable.